Best Sprays for Centipedes: Safe, Long-Lasting Solutions for Indoor and Outdoor Use
Centipedes can be persistent invaders indoors and around foundations. This guide reviews effective spray products designed to target centipedes, explaining how each works, where to apply, and what to expect. Learn how to choose a spray that fits your space, frequency needs, and safety preferences, with quick-start tips for both indoor and perimeter use.
| Product | Brand | Key Benefit | Indoor/Outdoor Use |
|---|---|---|---|
| Ortho Home Defense Insect Killer for Cracks & Crevices | Ortho | Long-lasting, deep-penetrating spray foam | Both |
| Ortho Home Defense MAX Insect Killer Spray (2-Pack) | Ortho | Perimeter barrier, indoor long protection | Indoor/Perimeter |
| Spectracide Weed Stop For Lawns | Spectracide | Weed control compatible with centipede lawns | Outdoor |
| PRN Pharmacal Mycodex Plus Environmental Control Spray | PRN Pharmacal | Broad-spectrum insecticide including centipedes | Indoor/Outdoor |
| NatroZing Ant & Roach Killer | NatroZing | Fast-acting, multi-insect protection | Indoor/Outdoor |
Ortho Home Defense Insect Killer for Cracks & Crevices

Ortho’s spray foam is designed to reach deep into cracks, crevices, and other hidden spots where centipedes hide. The product is marketed as long-lasting and suitable for both indoor and exterior use, with claims of killing centipedes among a broad list of common pests. It emphasizes deep penetration and residual effects that deter re-infestation on non-porous surfaces.
Ortho Home Defense MAX Insect Killer Spray

This product provides a perimeter and indoor barrier against multiple pests, including centipedes. It’s noted for staying effective for up to 12 months on nonporous indoor surfaces and for non-staining formula, which helps protect walls, baseboards, and entry points without leaving residues. It is commonly used to form a bug barrier around living spaces and around the home’s interior perimeter.
Spectracide Weed Stop For Lawns

Although primarily a lawn weed control product, it supports centipede lawns by selectively killing weeds without harming the grass when used as directed. It is suitable for outdoor application, helping maintain an even, healthy centipede lawn foundation that reduces pest harborage around the yard. It should be used according to label directions for best results.
PRN Pharmacal Mycodex Plus Environmental Control Spray

PRN Pharmacal Mycodex Plus combines environmental control with an insecticidal action that covers fleas, ticks, roaches, centipedes and a wide range of pests. The spray is suitable for treating pet bedding, rugs, and furniture, making it a versatile option for households dealing with centipede activity indoors and near living areas. The product emphasizes broad-spectrum efficacy and safe application around home environments.
NatroZing Ant & Roach Killer

NatroZing offers a fast-acting, plant-derived formula designed to kill a broad range of insects including centipedes, ants, and roaches. It emphasizes safety for humans and pets while maintaining outdoor and indoor effectiveness. The product claims extended protection for several weeks, helping to deter future intrusions by common household pests.
Buying Guide
When selecting a spray to control centipedes, consider the following factors to balance safety, effectiveness, and convenience:
- Target range: Choose products labeled for centipedes and other invaders common in your area to ensure broad coverage.
- Indoor vs. outdoor use: Perimeter and indoor sprays reduce entry points, while foams and residual sprays suit cracks and crevices behind appliances and under sinks.
- Residual duration: Longer-lasting formulas reduce reapplication frequency but may require more careful surface compatibility checks on nonporous versus porous materials.
- Application surfaces: Some sprays are best for nonporous surfaces; others work well in cracks, crevices, and around baseboards. Follow label directions to protect pets and family.
- Safety and ingredients: Plant-based or low-toxicity formulations may be preferable for homes with children, pets, or allergy concerns. Always read labels for safety precautions and ventilation needs.
- Multi-pest efficacy: If centipedes co-occur with other insects, a broad-spectrum product can simplify treatment, but verify it’s suitable for your home environment and surfaces.
- Ventilation and coverage area: Plan applications to cover entry points, basements, crawlspaces, and around foundations without overlogging indoor spaces.
- Maintenance plan: Combine initial treatment with preventative steps such as sealing cracks, reducing moisture, and trimming landscaping near foundations to enhance long-term results.